Home / 14,787.58-20,401.50-11,385.64

Finding the Fourth Proportional to 14,787.58, 20,401.50 and 11,385.64

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Solution

The fourth proportional to 14,787.58, 20,401.50 and 11,385.64 is: 15,708.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,787.58 : 20,401.50 = 11,385.64 : x
  2. Step 2: Convert to fraction form
    14,787.58/20,401.50 = 11,385.64/x
  3. Step 3: Cross multiply
    14,787.58x = 20,401.50 × 11,385.64
  4. Step 4: Simplify right side
    14,787.58x = 232,284,134.46
  5. Step 5: Solve for x
    x = 232,284,134.46/14,787.58
  6. Step 6: Final answer
    x = 15,708.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.